/Engine/Plugins/Experimental/GameFeatures/Source/GameFeatures/Public/GameFeaturePluginOperationResult.h
Template Conversion Constructor to allow us to initialize fromTValueOrErrorMakeError This is needed because of howTValueOrErrorimplements MakeError through the same templated approach withTValueOrError_ErrorProxy.
template<typename... ArgTypes> FResult ( [TValueOrError_ErrorProxy](API\Runtime\Core\Templates\TValueOrError_ErrorProxy)< ArgTypes... > && ErrorProxyIn )